/*-----------------------------------------------------------------------------
 * Name:    ADC_STM32072B-EVAL.c
 * Purpose: ADC interface for STM32072B-EVAL board
 * Rev.:    1.0.0
 *----------------------------------------------------------------------------*/

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     specific prior written permission.
   *
   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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/*! \page stm32072b_eval_bsi_adc ADC BSI Setup

The BSI ADC requires:
  - Configuration of ADC1 peripheral
  - Setup of pin used by ADC
  - Configuration of ADC1 clock
 
Pinout tab
----------
  1. Select <b>ADC1_IN10</b> IN10 Single-ended
  2. Click on <b>PC0</b> pin and select <b>ADC1_IN10</b> function
 

Configuration tab
-----------------
  1. Under Connectivity open \b ADC1 Configuration:
     - <b>Parameter Settings</b>: review settings, no changes required
     - <b>User Constants</b>: not used
     - <b>NVIC Settings</b>: disable interrupt
          Interrupt Table          | Enable | Preemption Priority | Sub Priority
          :------------------------|:-------|:--------------------|:------------
          ADC1 and ADC2 interrupts | \b OFF | 0                   | 0
     - <b>DMA Settings</b>: disabled
     - <b>GPIO Settings</b>: review settings, no changes required
          Pin Name | Signal on Pin | GPIO out..| GPIO mode   | GPIO Pull-up/Pull..| Maximum out | Fast Mode | User Label
          :--------|:--------------|:----------|:------------|:-------------------|:------------|:----------|:----------
          PC0      | ADC1_IN10     | n/a       | Analog mode | No pull-up and no..| n/a         | n/a       |.
     Click \b OK to close the ADC1 Configuration dialog
*/

#include "Board_ADC.h"                  // ::Board Support:A/D Converter

#include "stm32f0xx_hal.h"              // Device HAL
#include "MX_Device.h"

/* ------------------------------- Configuration ---------------------------- */
#define ADC_INSTANCE_HANDLE             hadc
#define ADC_RESOLUTION                  12U

#ifndef HAL_ADC_MODULE_ENABLED
  #error "::Device:STM32Cube Framework (API): STM32CubeMX: Enable ADC1 IN10!"
#endif

#ifndef MX_ADC_IN10_Pin
  #error "::Device:STM32Cube Framework (API): STM32CubeMX: Set pin PC1 to ADC1_IN10 function!"
#endif
/* -------------------------------------------------------------------------- */

extern ADC_HandleTypeDef ADC_INSTANCE_HANDLE;


/**
  \fn          int32_t ADC_Initialize (void)
  \brief       Initialize buttons
  \returns
   - \b  0: function succeeded
   - \b -1: function failed
*/
int32_t ADC_Initialize (void) {

  // All initialization code is generated by CubeMX
  return 0;
}

/**
  \fn          int32_t ADC_Uninitialize (void)
  \brief       De-initialize Analog-to-Digital Converter
  \returns
   - \b  0: function succeeded
   - \b -1: function failed
*/
int32_t ADC_Uninitialize (void) {

  // All de-initialization code is generated by CubeMX
  return 0;
}

/**
  \fn          int32_t ADC_StartConversion (void)
  \brief       Start conversion
  \returns
   - \b  0: function succeeded
   - \b -1: function failed
*/
int32_t ADC_StartConversion (void) {

  if (HAL_ADC_Start(&ADC_INSTANCE_HANDLE) != HAL_OK) {
    return -1;
  }

  return 0;
}

/**
  \fn          int32_t ADC_ConversionDone (void)
  \brief       Check if conversion finished
  \returns
   - \b  0: conversion finished
   - \b -1: conversion in progress
*/
int32_t ADC_ConversionDone (void) {

  if (HAL_ADC_PollForConversion(&ADC_INSTANCE_HANDLE, 0U) != HAL_OK) {
    return -1;
  }

  return 0;
}

/**
  \fn          int32_t ADC_GetValue (void)
  \brief       Get converted value
  \returns
   - <b> >=0</b>: converted value
   - \b -1: conversion in progress or failed
*/
int32_t ADC_GetValue (void) {
  return ((int32_t)HAL_ADC_GetValue(&ADC_INSTANCE_HANDLE));
}


/**
  \fn          uint32_t ADC_GetResolution (void)
  \brief       Get resolution of Analog-to-Digital Converter
  \returns     Resolution (in bits)
*/
uint32_t ADC_GetResolution (void) {
  return ADC_RESOLUTION;
}
